Title:
Combined telegraph and telephone system
United States Patent 2764633
Inventors:
Fernandez, Serrataco John R.
Publication Date:
09/25/1956
Export Citation:
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Assignee:
Fernandez, Serrataco John R.
Primary Class:
379/108.02
International Classes:
H04M1/65; H04M11/06; H04M1/65; H04M11/06
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US Patent References:
2673241Telephone answering and recording device
2222751Communication system
1887588Telephone system